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Read Dirty to Me - Isolation Levels/User Impact

Issue a "SELECT {data} FROM {myTable}" statement and users need to trust the data returned is accurate. What happens when multiple processes access the same data? What happens further if one of those process is an UPDATE or even a DELETE statement? How about if both processes will be updating that data? Understanding Isolation in SQL Server is paramount in ensuring data integrity in your system. We will cover the different levels of isolation and how they impact what a user views when accessing the data at a given point-in-time.